Suitcase



FIG. 1 is a perspective view of a suitcase showing my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is an underside plan view thereof;

FIG. 4 is a rear elevation thereof;

FIG. 5 is a plan view thereof;

FIG. 6 is a right side elevation thereof; and,

FIG. 7 is a left side elevation thereof.

The ornamental design for a suitcase, as shown and described.